Get one consumer

curl --request GET \
  --url https://api.chift.eu/consumers/{consumerid} \
  --header 'Authorization: Bearer <token>'

{
  "consumerid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "email": "<string>",
  "internal_reference": "<string>",
  "redirect_url": "<string>"
}